AN EXTENSION LADDER AND ITS USE IN A STRAIGHT COMBINATION LADDER, A PLATFORM LADDER OR A STEPLADDER
    1.
    发明公开
    AN EXTENSION LADDER AND ITS USE IN A STRAIGHT COMBINATION LADDER, A PLATFORM LADDER OR A STEPLADDER 审中-公开
    AUSZIEHLEITER UND INREVENDUNG IN EINER GERADEN KOMBILEITER,PLATTFORMLEITER ODER TRITTLEITER

    公开(公告)号:EP2169175A1

    公开(公告)日:2010-03-31

    申请号:EP07764155.3

    申请日:2007-07-03

    申请人: Wang, Kecheng

    发明人: Wang, Kecheng

    摘要: An extension ladder (100), including multiple ladder sections vertically fit to each other, each ladder section including a pair of columns (101) dispose on both sides thereof and a rung (102) connected thereto, diameters of the columns (101) on both sides increasing from the top to the bottom, a pair of pin holes being disposed on the column (101) and engaged to a latch gear (104) in the rung (102). The latch gear (104) includes a pair of drive wheels (109, 111), a pair of transmission parts (110,112), and a pair of pins (105) disposed on both ends thereof. A self-locking part (106) is disposed on the pin (105). Rotation of the drive wheels (109, 111) drives the pins (105) to move axially via the transmission parts (110, 112). Multiple extension ladders can form a vertical ladder, a step ladder, or a platform ladder.

    摘要翻译: 一种延伸梯(100),包括彼此垂直配合的多个梯形部分,每个梯部分包括一对在其两侧设置的柱(101)和与其连接的梯级(102),柱(101)的直径在 两侧从顶部增加到底部,一对销孔设置在所述柱(101)上并与所述梯级(102)中的锁定齿轮(104)啮合。 闩锁齿轮(104)包括一对驱动轮(109,111),一对传动部件(110,112)和一对销钉(105),其设置在其两端。 自锁部分(106)设置在销(105)上。 驱动轮(109,111)的旋转驱动销(105)经由传动部件(110,112)轴向移动。 多个延伸梯可以形成一个垂直的梯子,一个梯子或一个平台梯子。